YING-CHI LIAO, P.E., G.E.
Senior Geotechnical Engineer

As Senior Geotechnical Engineer, Ying-Chi Liao contributes more than 21 years of geotechnical and environmental engineering experience. He received his Master of Science Degree in Engineering from U.C. Berkley in 1985. Ying-Chi is responsible for the day to day management of MatriScope’s geotechnical and environmental engineering department and related material testing, client consultation, preparation and review of technical reports. He is responsible for preparation of soil recommendations related to building foundations, pavement designs, slope analysis, retention ponds, slurry walls, monitoring piezometers and settlement gauges, and other aspects of soil related construction. Additional experience includes deep foundation design and construction including pile driving, drilled piles, pile load testing, and preparation of related technical reports.

RANDALL L. LEONG, P.E., G.E.
Senior Engineering Manager

As Senior Engineering Manager, Randall Leong contributes more than 30 years of geotechnical and construction materials testing experience. His current responsibilities include mentoring of technical staff and participating as a project consultant on an as needed basis. Randall's background includes extensive experience in laboratory and field testing of soils, concrete, aggregate, steel, and asphalt concrete. Responsibilities include supervising preliminary site studies for the design, planning, and improvement of residential subdivisions, commercial, public facilities, bridges, wastewater treatment facilities, and underground utilities. Randall has extensive background in the preparation of specialized product evaluation through the monitoring, load testing, and reporting of tests conducted on construction products and building features.